beveling 2D cutout shapes not working as expected
Practice on some geometry that isn't this scene first, to get the hang of how bevel works and how to select the right geometry quickly. Bevel doesn't magically know what you want to bevel, you probably want to select the edges to get the right kind of bevel.



This is what you'd get if you bevelled using faces, it's probably not what you want:



But this is the bevel with edges: